> ## Documentation Index
> Fetch the complete documentation index at: https://docs.payments.sardine.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Crypto On/Off-ramp Testing Guide

This testing guide will allow you to quickly test out your sandbox integration before receiving production keys and going live. Additional testing credentials are provided [here](/guides/integration/payments/Onboarding/testingcredentials)

### 1. Create a new user in sandbox

* Our sandbox user registration is designed to intake any phone number starting with 96 as a test user

* The OTP for the test account will be last 6 digits of the test phone number.

  * Example: Phone number is 961-234-5678. OTP will be 345678

* If the test number does not work or does not bring you to the KYC registration page, please try a different number or reach out to Sardine to reset the login.

<Frame>
  <img src="https://mintlify.s3.us-west-1.amazonaws.com/sardine-payments/images/widget-login-OTP.png" alt="Widget Login" />
</Frame>

### 2. Input KYC information

**Name -** Any value

**Date of Birth -** Any value where user is above 18 years old

**Nationality -** Any nationality

**Address -** Any physical address (No P.O. Boxes) that matches the nationality

### 3. Input additional user info

For US Users:
**SSN -** Any random 9 diget number

For Non-US users:
**Questionnaire -** Any answer provided is acceptable

### 4. Link a payment method

Use one of the below testing cards

**Credit / Debit Card**

| Country | Card Type | Card Number      |
| ------- | --------- | ---------------- |
| US      | Debit     | 4659105569051157 |
| FR      | Credit    | 4010056200000018 |

Other card details:

* Any expiry date in the future

* Any CVV code

* Any postal/zip code

Additional payment methods are provided [here](/guides/integration/payments/Onboarding/testingcredentials)

### 5. Create an order and link the wallet address

Once you've successfully created a new user and linked a payment method, create and then confirm the order.

If you have not passed a wallet address parameter when initializing the widget, please use the following wallet address:

**Low Risk Wallet Address -** 0xaaaaaA1234567890000000000000000000000003

### 5. Confirm Order completion

Once you have confirmed the order, you should see a screen like this.

<Frame>
  <img src="https://mintlify.s3.us-west-1.amazonaws.com/sardine-payments/images/buy-widget-order-complete.png" alt="Order Complete" />
</Frame>

You can exit or be redirected out of the Sardine widget. Once you have exited the widget you should receive updates on the order status via webhook.